Run results for: array vs onject

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Browser: Chrome 91

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
obj	398051.7 Ops/sec
arr	3880222.8 Ops/sec

Tests:

obj
let data = [40, 30, 20, 10]; let labels = ["D", "C", "B", "A"]; const res = data.map((n, i) => ({ [labels[i]]: n })) .sort((a, b) => Object.values(a)[0] - Object.values(b)[0]) .map(o => Object.keys(o)[0]);
arr
let data = [40, 30, 20, 10]; let labels = ["D", "C", "B", "A"]; const res = data.map((n, i) => [labels[i], n]) .sort((a, b) => a[1] - b[1]) .map(a => a[0])